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A057657
as a simple table
n
a(n)
1
2
2
3
3
4
4
5
5
8
6
18
7
28
8
50
9
100
10
171
11
316
[2,3,4,5,8,18,28,50,100,171,316]
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Last modified April 25 12:15 EDT 2024. Contains 371969 sequences. (Running on oeis4.)